<template>


  <el-container class="home-container">
<!--    头部区域-->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button  type="info" @click="logout"> 退出</el-button>
    </el-header>
<!--    页面主体区-->
    <el-container>
<!--      侧边栏-->
      <el-aside :width="isCollapse ? '64px':'200px' ">
        <div class="toggle-button" @click="toggleCollapse">| | |</div>
<!--        侧边栏菜单区-->
        <el-menu

            background-color="#545c64"
            text-color="#fff"
            active-text-color="#ffd04b" unique-opened  :collapse="isCollapse"  router :default-active="activePath">
          <el-submenu :index="item.id + '' " v-for="item  in menuList" :key="item.id">
<!--            一级菜单的模板区域-->
            <template slot="title">
<!--              图标-->
              <i :class="iconsObj[item.id]"></i>
<!--              文本-->
              <span>{{ item.authName }}</span>
            </template>
<!--            二级菜单-->
            <el-menu-item :index="'/' + subItem.path "  v-for="subItem in item.children" :key="subItem.id"  @click="saveNavState('/' + subItem.path)">
              <template slot="title">
                <!--              图标-->
                <i class="el-icon-menu"></i>
                <!--              文本-->
                <span>{{ subItem.authName }}</span>
              </template>
            </el-menu-item>

          </el-submenu>

        </el-menu>


      </el-aside>





<!--      右侧主体区域-->
      <el-main>
<!--        路由占位符-->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>



</template>

<script>
export default {
  data(){
    return {
      //左侧菜单数据
      menuList: [],
      iconsObj:{
        '125': 'incofont  .icon-users' ,
        '103': 'incofont .icon-tijikongjian',
        '101': 'incofont .icon-shangpin',
        '102': 'incofont .icon-danju',
        '145': 'incofont .icon-baobiao',
      },
      //是否折叠
      isCollapse:false,
      //被激活的链接地址, 什么时候取出呢?等到一创建好,就从session拿出来
      activePath:''
    }
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods:{
    logout(){
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    //获取所有的菜单
    async getMenuList(){
        const{data:res} = await this.$http.get('menus')
      if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data
      console.log(res);
    },
    //点击按键切换菜单的折叠与展开
    toggleCollapse(){
      this.isCollapse = !this.isCollapse
    },
    //保存链接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath = activePath

    },
  }
}
</script>

<style scoped>
.home-container{
  height: 100%;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #ffffff;
  font-size: 20px;
  >div {
    display:flex ;
    align-items: center;
  }
}
.el-aside{
  background-color: #333744;
}
.el-main{
  background-color: #eaedf1;
}
  .el-container{
  background-color: #373d41;
}
  .toggle-button{
    background-color: rebeccapurple;
    font-size: 10px;
    line-height: 24px;
    color: #ffffff;
    text-align: center;
    cursor: pointer;
  }
</style>
